Comment # 10 on bug 1200593 from Chris Wong

lsinitrd does containt some snd-hda modules, but it does not contain
snd-hda-codec-hdmi that direct the sound to hdmi.

sudo lsinitrd |grep snd
-rw-r--r--   1 root     root         7911 May 12 03:00
lib/modules/5.14.21-150400.22-default/kernel/sound/core/snd-hwdep.ko.zst
-rw-r--r--   1 root     root        55214 May 12 03:00
lib/modules/5.14.21-150400.22-default/kernel/sound/core/snd.ko.zst
-rw-r--r--   1 root     root        83005 May 12 03:00
lib/modules/5.14.21-150400.22-default/kernel/sound/core/snd-pcm.ko.zst
-rw-r--r--   1 root     root        22962 May 12 03:00
lib/modules/5.14.21-150400.22-default/kernel/sound/core/snd-rawmidi.ko.zst
-rw-r--r--   1 root     root         4945 May 12 03:00
lib/modules/5.14.21-150400.22-default/kernel/sound/core/snd-seq-device.ko.zst
-rw-r--r--   1 root     root        22011 May 12 03:00
lib/modules/5.14.21-150400.22-default/kernel/sound/core/snd-timer.ko.zst
-rw-r--r--   1 root     root        48721 May 12 03:00
lib/modules/5.14.21-150400.22-default/kernel/sound/hda/snd-hda-core.ko.zst
-rw-r--r--   1 root     root         5797 May 12 03:00
lib/modules/5.14.21-150400.22-default/kernel/sound/hda/snd-intel-dspcfg.ko.zst
-rw-r--r--   1 root     root         3667 May 12 03:00
lib/modules/5.14.21-150400.22-default/kernel/sound/hda/snd-intel-sdw-acpi.ko.zst
-rw-r--r--   1 root     root        85561 May 12 03:00
lib/modules/5.14.21-150400.22-default/kernel/sound/pci/hda/snd-hda-codec.ko.zst
-rw-r--r--   1 root     root        26676 May 12 03:00
lib/modules/5.14.21-150400.22-default/kernel/sound/pci/hda/snd-hda-intel.ko.zst